

<!DOCTYPE html>
<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
<head>
  <meta charset="utf-8">
  
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  
  <title>federatedml.util.fate_operator &mdash; FATE 1.0 documentation</title>
  

  
  
  
  

  
  <script type="text/javascript" src="../../../_static/js/modernizr.min.js"></script>
  
    
      <script type="text/javascript" id="documentation_options" data-url_root="../../../" src="../../../_static/documentation_options.js"></script>
        <script type="text/javascript" src="../../../_static/jquery.js"></script>
        <script type="text/javascript" src="../../../_static/underscore.js"></script>
        <script type="text/javascript" src="../../../_static/doctools.js"></script>
        <script type="text/javascript" src="../../../_static/language_data.js"></script>
    
    <script type="text/javascript" src="../../../_static/js/theme.js"></script>

    

  
  <link rel="stylesheet" href="../../../_static/css/theme.css" type="text/css" />
  <link rel="stylesheet" href="../../../_static/pygments.css" type="text/css" />
    <link rel="index" title="Index" href="../../../genindex.html" />
    <link rel="search" title="Search" href="../../../search.html" /> 
</head>

<body class="wy-body-for-nav">

   
  <div class="wy-grid-for-nav">
    
    <nav data-toggle="wy-nav-shift" class="wy-nav-side">
      <div class="wy-side-scroll">
        <div class="wy-side-nav-search" >
          

          
            <a href="../../../index.html" class="icon icon-home"> FATE
          

          
          </a>

          
            
            
          

          
<div role="search">
  <form id="rtd-search-form" class="wy-form" action="../../../search.html" method="get">
    <input type="text" name="q" placeholder="Search docs" />
    <input type="hidden" name="check_keywords" value="yes" />
    <input type="hidden" name="area" value="default" />
  </form>
</div>

          
        </div>

        <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
          
            
            
              
            
            
              <!-- Local TOC -->
              <div class="local-toc"></div>
            
          
        </div>
      </div>
    </nav>

    <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">

      
      <nav class="wy-nav-top" aria-label="top navigation">
        
          <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
          <a href="../../../index.html">FATE</a>
        
      </nav>


      <div class="wy-nav-content">
        
        <div class="rst-content">
        
          















<div role="navigation" aria-label="breadcrumbs navigation">

  <ul class="wy-breadcrumbs">
    
      <li><a href="../../../index.html">Docs</a> &raquo;</li>
        
          <li><a href="../../index.html">Module code</a> &raquo;</li>
        
      <li>federatedml.util.fate_operator</li>
    
    
      <li class="wy-breadcrumbs-aside">
        
      </li>
    
  </ul>

  
  <hr/>
</div>
          <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
           <div itemprop="articleBody">
            
  <h1>Source code for federatedml.util.fate_operator</h1><div class="highlight"><pre>
<span></span><span class="c1">#</span>
<span class="c1">#  Copyright 2019 The FATE Authors. All Rights Reserved.</span>
<span class="c1">#</span>
<span class="c1">#  Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);</span>
<span class="c1">#  you may not use this file except in compliance with the License.</span>
<span class="c1">#  You may obtain a copy of the License at</span>
<span class="c1">#</span>
<span class="c1">#      http://www.apache.org/licenses/LICENSE-2.0</span>
<span class="c1">#</span>
<span class="c1">#  Unless required by applicable law or agreed to in writing, software</span>
<span class="c1">#  distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span>
<span class="c1">#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<span class="c1">#  See the License for the specific language governing permissions and</span>
<span class="c1">#  limitations under the License.</span>
<span class="c1">#</span>

<span class="kn">import</span> <span class="nn">types</span>
<span class="kn">from</span> <span class="nn">collections</span> <span class="k">import</span> <span class="n">Iterable</span>

<span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>

<span class="kn">from</span> <span class="nn">federatedml.feature.instance</span> <span class="k">import</span> <span class="n">Instance</span>


<span class="k">def</span> <span class="nf">_one_dimension_dot</span><span class="p">(</span><span class="n">X</span><span class="p">,</span> <span class="n">w</span><span class="p">):</span>
    <span class="n">res</span> <span class="o">=</span> <span class="mi">0</span>
    <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">X</span><span class="p">)):</span>
        <span class="k">if</span> <span class="n">np</span><span class="o">.</span><span class="n">fabs</span><span class="p">(</span><span class="n">X</span><span class="p">[</span><span class="n">i</span><span class="p">])</span> <span class="o">&lt;</span> <span class="mf">1e-5</span><span class="p">:</span>
            <span class="k">continue</span>
        <span class="n">res</span> <span class="o">+=</span> <span class="n">w</span><span class="p">[</span><span class="n">i</span><span class="p">]</span> <span class="o">*</span> <span class="n">X</span><span class="p">[</span><span class="n">i</span><span class="p">]</span>
    <span class="k">return</span> <span class="n">res</span>


<div class="viewcode-block" id="dot"><a class="viewcode-back" href="../../../federatedml.util.html#federatedml.util.fate_operator.dot">[docs]</a><span class="k">def</span> <span class="nf">dot</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">w</span><span class="p">):</span>
    <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">Instance</span><span class="p">):</span>
        <span class="n">X</span> <span class="o">=</span> <span class="n">value</span><span class="o">.</span><span class="n">features</span>
    <span class="k">else</span><span class="p">:</span>
        <span class="n">X</span> <span class="o">=</span> <span class="n">value</span>

    <span class="c1"># # dot(a, b)[i, j, k, m] = sum(a[i, j, :] * b[k, :, m])</span>
    <span class="c1"># # One-dimension dot, which is the inner product of these two arrays</span>
    <span class="c1"># if np.ndim(X) == np.ndim(w) == 1:</span>
    <span class="c1">#     return _one_dimension_dot(X, w)</span>
    <span class="c1"># elif np.ndim(X) == 2 and np.ndim(w) == 1:</span>
    <span class="c1">#     res = []</span>
    <span class="c1">#     for x in X:</span>
    <span class="c1">#         res.append(_one_dimension_dot(x, w))</span>
    <span class="c1">#     res = np.array(res)</span>
    <span class="c1"># else:</span>
    <span class="c1">#     res = np.dot(X, w)</span>
    <span class="n">res</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">dot</span><span class="p">(</span><span class="n">X</span><span class="p">,</span> <span class="n">w</span><span class="p">)</span>
    <span class="k">return</span> <span class="n">res</span></div>


<div class="viewcode-block" id="reduce_add"><a class="viewcode-back" href="../../../federatedml.util.html#federatedml.util.fate_operator.reduce_add">[docs]</a><span class="k">def</span> <span class="nf">reduce_add</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">):</span>
    <span class="k">if</span> <span class="n">x</span> <span class="ow">is</span> <span class="kc">None</span> <span class="ow">and</span> <span class="n">y</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
        <span class="k">return</span> <span class="kc">None</span>

    <span class="k">if</span> <span class="n">x</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
        <span class="k">return</span> <span class="n">y</span>

    <span class="k">if</span> <span class="n">y</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
        <span class="k">return</span> <span class="n">x</span>
    <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">Iterable</span><span class="p">):</span>
        <span class="n">result</span> <span class="o">=</span> <span class="n">x</span> <span class="o">+</span> <span class="n">y</span>
    <span class="k">else</span><span class="p">:</span>
        <span class="n">result</span> <span class="o">=</span> <span class="p">[]</span>
        <span class="k">for</span> <span class="n">idx</span><span class="p">,</span> <span class="n">acc</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">x</span><span class="p">):</span>
            <span class="n">result</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">acc</span> <span class="o">+</span> <span class="n">y</span><span class="p">[</span><span class="n">idx</span><span class="p">])</span>
    <span class="k">return</span> <span class="n">result</span></div>



</pre></div>

           </div>
           
          </div>
          <footer>
  

  <hr/>

  <div role="contentinfo">
    <p>
        &copy; Copyright 2019, FATE_TEAM

    </p>
  </div>
  Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/rtfd/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. 

</footer>

        </div>
      </div>

    </section>

  </div>
  


  <script type="text/javascript">
      jQuery(function () {
          SphinxRtdTheme.Navigation.enable(true);
      });
  </script>

  
  
    
   

</body>
</html>